4b,5a-Dihydro-5H-benzo(3,4)phenanthro(1,2-b)azirine 5H-Benzo(3,4)phenanthro(1,2-b)azirine, 4b,5a-dihydro- 71382-54-2 BRN 4454549 Benzo(c)phenanthrene-5,6-imine CCRIS 6810